US swimmers gesture before the men's 4x100m medley relay final at the Beijing 2008 Olympic Games in the National Aquatics Center, also known as the Water Cube on August 17, 2008. US swimmers set a new world record and won the gold medal in the event with 3 minutes 29.34 seconds.

Michael Phelps of the United States swims during the men's 4x100m medley relay final at the Beijing 2008 Olympic Games in the National Aquatics Center, also known as the Water Cube on August 17, 2008. Phelps won his eighth gold medal at the Beijing 2008 Olympic Games with the help of his teammates with 3 minutes 29.34 seconds.

Michael Phelps of the United States celebrates after his team won the men's 4x100m medley relay final at the Beijing 2008 Olympic Games in the National Aquatics Center, or the Water Cube on August 17, 2008.

Michael Phelps of the United States swims during the men's 4x100m medley relay final at the Beijing 2008 Olympic Games in the National Aquatics Center, also known as the Water Cube on August 17, 2008.

(Xinhua News Agency August 17, 2008)